NEMA C78.1431-1997 电灯:幻灯放映机灯.带GY5.3基座的边缘参照卤钨灯的冷凝二色性2 in(51 mm)反光器.ANSI C78.1405-1991,ANSI C78.1422-1991和ANSI C78.1423-1991的整合/修订(第1版)
Electric Lamps - Slide Project Lamps, Condensing, Dichroic, Two-Inch (51 MM), Integral Reflector, Rim Reference Tungsten-Halogen Lamps with GY 5.3 Bases (Consolidation/Revision of ANSI C78.1405-1991,ANSI C78.1422-1991, and ANSI C78.1423-1991; First Editio